Shen Dong didn't know where the Sky City was, but obviously, now he couldn't find it, after all, some keys were lost, which means that there were a lot of keys, and now Shen Dong was also in trouble.

"Where is Sky City, do you know?" Shen Dong asked lightly.

"It's useless, even if you find the Sky City, you can't open it without a key, and even if the Immortal Emperor comes, there's no way." The other party said directly.

"It's okay, I'm just trying my luck, do you know where Sky City was last seen?" Shen Dong asked directly.

"The last place where Sky City appeared should be on the side of the territorial waters of the shark clan, because it was there that the heavenly demons they encountered appeared, and we didn't pay attention to it at the beginning, but by the time we knew all this, the shark clan had directly occupied the nearby sea area.

The most important thing is that the shark clan has regarded it as their dragon rejuvenating place, even if you want to go over, you will be blocked by countless shark clans, because once you enter, you will be discovered, outside, they may not be able to exert all their power due to some limitations, but once they enter their territory, because of the blessing of the shark clan for generations, all creatures there will be discovered as long as they enter. The other party said directly.

"Thank you, if I can, I should be able to help you get rid of some of the sharks, but don't get your hopes up too much, because I don't know if I'll be able to get in there."

"In that case, then you have this key, if you want to enter the Sky City, this key can guide you in the direction, of course, that's all, this key is the existence of some things that have been lost, part of which has passed away at the bottom of the sea, and part of it has been obtained by the shark clan, and it is better not to take it out unless it is absolutely necessary, because he will have a part of the sense with another key, as long as you take it out, you will be exposed.

The Sharks have always wanted to get our keys to take charge of the Sky City, and then develop better technology to become the true Lord of the Seas and rule the world.

But although they ate the corpse of the demon, but with the reproduction, part of the shark clan bloodline is getting weaker and weaker, and the intelligence is getting more and more underground, although there are still some smart people, but there are very few, and this part of the people dominates the entire shark clan, they are called the royal bloodline, there are three of this royal family, and the three families always intermarry with each other to ensure the purity of the bloodline, so as to avoid the bloodline being weakened, but what they want to do more is to enter the sky city and capture more heavenly demons to improve themselves. ”

The other party said directly, which made Shen Dong suddenly realize that all this seemed to be doomed, and obviously the other party's purpose was very simple.

"Thank you, this thing was given to you, it should be useful to you." Shen Dong said directly, what he took out was some water-attribute demon beast Neidan, these Neidans can only be used by water-attribute monks, but Shen Dong has always been useless, and later because of the reason of dispersion, these Neidans actually absorbed most of the water attributes, making the attributes of Neidan more pure and turned into a pure energy Neidan, and without spiritual intelligence, there is pure energy.

This kind of elixir can simply be a treasure pill.

It is of little use to Shen Dong, and the only use seems to be to sell it, and now it is given to the other party because the other party gave Shen Dong the key, which can be regarded as Shen Dong giving them something and returning the favor.

"Thank you, you're a nice guy." Seeing Shen Dong's things, the mermaid said directly, making Shen Dong depressed, he didn't want to be a good person, because this sentence always felt like he had been issued a good person card.

However, Shen Dong didn't bother to say anything to the other party, and left directly.

According to the other party's guidance, Shen Dong quickly discovered the location of the shark clan, this location is really huge, compared to the weak mermaid can be said to be very luxurious, countless members of the shark clan are digging stones in the stone mines on the bottom of the sea everywhere, to build this great city, such a huge and brilliant city, Shen Dong is really rare.

However, because of the mermaid's warning, he did not enter directly, but chose to observe, he found that there seemed to be a soul breath around him, and he found that there were a lot of dead creatures here, including mermaids, aquatic demons, ordinary underwater creatures, and sharks.

Among them, the shark family is the largest, with tens of millions of them, and most of these are obviously exploited existences, or perhaps sacrificial existences.

Shen Dong passed through his divine sense, and in an instant, he found nine huge altars, under the altars, full of dry bones, and the most, it seemed that it should be the existence of mermaids and sharks.

These dry bones seemed to have died a long time ago, but the blood stains on the altar seemed to have never dissipated, and they had already dyed the vicinity into a red area, and Shen Dong discovered all this through a simple inspection of his divine sense.

And this altar, after Shen Dong observed, he also made a very shocking discovery, this turned out to be the soul refining formation, as well as the blood refining formation, and the bone refining formation, three formations, three altars each, nine altars, and then related to each other, forming an existence in the middle.

Once the altar is urged, it is easy to enter millions of existences, gather on nine altars, and then a person enters the most central area of the altar, this area is actually an area to obtain energy, and what he obtains is the bloodline, bone and blood, and the existence of a powerful soul, the purpose of this is very simple, that is, a person's bloodline will not die, so that a person's bloodline can be maintained forever, and even can improve the life force.

But this is in the case of the death of countless people, for a while, even Shen Dong felt that this shark clan is crazy, countless creatures have been refined, but there are still many creatures left remnants, that is resentment, that is obsession, that is unwilling, little by little convergence, so that the blood and qi around it will not disperse, so that the surrounding undead will not be extinguished, so that all this seems extremely lonely.

And this huge city is actually blocking this formation, because this formation is too killing, and once it is discovered, it will definitely fall into a kind of danger.

Shen Dong hasn't finished reading it yet, and in an instant, he feels that his divine sense is locked, and the secret path is not good, obviously he was discovered, but it is, although his divine sense is good, plus tempering, it can be said that it is not an exaggeration to compare with Da Luo Jin Xian, but even so, it will still be discovered, after all, although he was cautious just now, there is also the existence of Da Luo Jin Xian.

For example, if you are in front of a blind person, the other person may not notice it, but if you are in a being who is the same as you, and you stand in front of him, he will find you.